California Today

Election Day Guide for San Mateo County Voters

02 June 2026 10:50

San Mateo County voters head to the polls on Tuesday, June 2, for California's primary election. Polls are open from 7 a.m.

to 8 p.m., and voters in line by 8 p.m. can cast their ballot.

Same-day registration is available at county elections offices, polling places, or vote centers. Completed ballots can be dropped off at any polling location, vote center, or ballot drop box.

Mailed ballots must be postmarked by June 2 and received within seven days. Results will be posted after 8 p.m.

at ElectionResults.sos.ca.gov.

Tags

San MateopoliticselectionvotingSan Mateo CountyLocal